Department of Physics and Technology: Nye registreringer

Viser treff 21-40 av 2285

    • Vector meson photoproduction in UPCs with FoCal 

      Bylinkin, Aleksandr; Nystrand, Joakim Ingemar; Tapia Takaki, Takaki (Journal article; Peer reviewed, 2023)
      We discuss the physics prospects of photon-induced measurements using the high-granularity FoCal detector to be installed at the ALICE experiment, covering the pseudorapidity interval 3.4 ≤ η ≤ 5.8. This new detector, ...

    • Realistic mask generation for matter-wave lithography via machine learning 

      Fiedler, Johannes; Palau, Adria Salvador; Osestad, Eivind Kristen; Parviainen, Pekka; Holst, Bodil (Journal article; Peer reviewed, 2023)
      Fast production of large-area patterns is crucial for the established semiconductor industry and enables industrial-scale production of next-generation quantum devices. Metastable atom lithography with binary holography ...

    • Multiphase flow and physicochemical interactions during geological carbon sequestration. A laboratory investigation from micrometer to meter 

      Haugen, Malin (Doctoral thesis, 2024-04-25)
      Karbonfangst og lagring (CCS) er ein teknologi som kan medverke til reduserte klimagassutslepp; eit uttalt mål frå verdas politiske leiarar. Oljeproduksjonen i verda er vedvarande høg og, medan prisen på fornybar energi ...

    • Pore-scale kinetics of calcium dissolution and secondary precipitation during geological carbon storage 

      Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)
      Geological carbon storage (GCS) in deep underground formations presents a significant opportunity to mitigate anthropogenic emissions of carbon dioxide in the context of climate change. The injected carbon dioxide may ...

    • Bremsstrahlung as a probe of baryon stopping in heavy-ion collisions 

      Nese, Sigurd; Nystrand, Joakim Ingemar (Journal article; Peer reviewed, 2023)
      In collisions between heavy ions at ultra-relativistic energies the participating protons lose energy, which is converted into new particles. As the protons slow down, they emit bremsstrahlung radiation. The yield and ...

    • CFD modelling of hydrogen and hydrogen-methane explosions – Analysis of varying concentration and reduced oxygen atmospheres 

      Lucas, Melodia Perez; Hisken, Helene; Skjold, Trygve; Arntzen, Bjørn Johan; van Wingerden, Kees (Journal article; Peer reviewed, 2023)
      This paper evaluates the predictive capabilities of the advanced consequence model FLACS-CFD for deflagrations involving hydrogen. Two modelling approaches are presented: the extensively validated model system originally ...

    • Inverse Compton emission from heavy WIMP annihilations in the Galactic Centre 

      Djuvsland, Julia Isabell; Hinton, Jim; Reville, Brian (Journal article; Peer reviewed, 2023)
      A thermal relic WIMP remains a prime candidate for the nature of Dark Matter, particularly for the more poorly constrained case of a heavy ( 1 TeV) WIMP. The highest fluxes from WIMP annihilations are expected in the region ...

    • Customization of the angular spectrum method for calculating the acoustic piston field transmitted through a solid plate using MATLAB 

      Sæther, Mathias Myrtveit (Journal article; Peer reviewed, 2023)
      The angular spectrum (AS) model is customized to calculate the spatial acoustic pressure field generated by a piston source and transmitted through a steel plate immersed in water, for normal beam incidence. A MATLAB program ...

    • Investigating Wave Energy Potential of a Spherical Object using Numerical and Experimental Methods 

      Dolve, Erling Calvert (Master thesis, 2023-11-21)

    • Observation of the boson peak in a two-dimensional material 

      Tømterud, Martin; Eder, Sabrina Daniela; Büchner, Christin; Wondraczek, Lothar; Simonsen, Ingve; Schirmacher, Walter; Manson, Joseph R.; Holst, Bodil (Journal article; Peer reviewed, 2023)
      The boson peak is an excess in the phonon vibrational density of states relative to the Debye model. It has been observed in a wide range of amorphous materials, from inorganic glasses to polymers. Two-dimensional random ...

    • Toward the end-to-end optimization of particle physics instruments with differentiable programming 

      Dorigo, Tommaso; Giammanco, Andrea; Vischia, Pietro; Aehle, Max; Bawaj, Mateusz; Boldyrev, Alexey; de Castro Manzano, Pablo; Derkach, Denis; Donini, Julien; Edelen, Auralee; Fanzago, Federica; Gauger, Nicolas R.; Glaser, Christian; Baydin, Atılım G.; Heinrich, Lukas; Keidel, Ralf; Kieseler, Jan; Krause, Claudius; Lagrange, Maxime; Lamparth, Max; Layer, Lukas; Maier, Gernot; Nardi, Federico; Pettersen, Helge Egil Seime; Ramos, Alberto; Ratnikov, Fedor; Röhrich, Dieter; de Austri, Roberto Ruiz; del Árbol, Pablo Martínez Ruiz; Savchenko, Oleg; Simpson, Nathan; Strong, Giles C.; Taliercio, Angela; Tosi, Mia; Ustyuzhanin, Andrey; Zaraket, Haitham (Journal article; Peer reviewed, 2023)
      The full optimization of the design and operation of instruments whose functioning relies on the interaction of radiation with matter is a super-human task, due to the large dimensionality of the space of possible choices ...

    • Interhemispheric asymmetries of neutral upwelling and ion upflow 

      Lessard, Marc R.; Damsell, Alec; Sadler, F. Brent; Oksavik, Kjellmar; Clausen, Lasse (Journal article; Peer reviewed, 2023)
      This work addresses interhemispheric differences in cusp-related neutral density enhancements. The focus is on enhancements that are driven by Poleward Moving Auroral Forms (PMAF), which provide a repetitive sequence of ...

    • Global ULF Waves Excited by Solar Wind Dynamic Pressure Impulses: 1. Timescales and Geomagnetic Activity Dependence 

      Xie, Zi-Kang; Zong, Q.G.; Ren, Jie; Yue, Chao; Liu, Zhi-Yang; Liu, Jian-Jun; Hu, Ze-Jun; Li, Xing-Yu; Yin, Ze-Fan; Yan, Yun; Li, Li; Gjerløv, Jesper (Journal article; Peer reviewed, 2023)
      Solar wind dynamic pressure pulse is one of the sources of ultra-low frequency (ULF) waves. Based on 1-second resolution magnetic field observations from SuperMAG from 2012 to 2019, we conducted a statistical study on ...

    • 3He spin-echo scattering indicates hindered diffusion of isolated water molecules on graphene-covered Ir(111) 

      Kyrkjebø, Signe; Cassidy, Andrew; Lambrick, Sam; Jardine, Andrew; Holst, Bodil; Hornekær, Liv (Journal article; Peer reviewed, 2023)
      The dynamics of water diffusion on carbon surfaces are of interest in fields as diverse as furthering the use of graphene as an industrial-coating technology and understanding the catalytic role of carbon-based dust grains ...

    • Effect of relative permeability hysteresis on reservoir simulation of underground hydrogen storage in an offshore aquifer 

      Lysyy, Maksim; Fernø, Martin; Ersland, Geir (Journal article; Peer reviewed, 2023)
      Underground hydrogen storage (UHS) in porous media is proposed to balance seasonal fluctuations between demand and supply in an emerging hydrogen economy. Despite increasing focus on the topic worldwide, the understanding ...

    • Library of Simulated Gamma-Ray Glows and Application to Previous Airborne Observations 

      Sarria, David Alexandre Stephan; Østgaard, Nikolai; Marisaldi, Martino; Lehtinen, Nikolai Grigorievich; Mezentsev, Andrey (Journal article; Peer reviewed, 2023)
      Gamma-Ray Glows (GRGs) are high energy radiation originating from thunderclouds, in the MeV energy regime, with typical duration of seconds to minutes, and sources extended over several to tens of square kilometers. GRGs ...

    • A unified picture of medium-induced radiation 

      Isaksen, Johannes Hamre; Takacs, Adam; Tywoniuk, Konrad (Journal article; Peer reviewed, 2023)
      We revisit the picture of jets propagating in the quark-gluon plasma. In addition to vacuum radiation, partons scatter on the medium constituents resulting in induced emissions. Analytical approaches to including these ...

    • Prompt gamma-ray spectroscopy in conjunction with the Monte Carlo Library Least Squares approach: applications to range verification in proton therapy 

      Skjerdal, Kyrre; Kögler, Toni; Lionheart, William; Ytre-Hauge, Kristian Smeland; Meric, Ilker (Journal article; Peer reviewed, 2023)
      Prompt Gamma-ray Spectroscopy (PGS) in conjunction with the Monte Carlo Library Least Squares (MCLLS) approach was investigated for the purposes of range monitoring in proton therapy through Monte Carlo simulations. Prompt ...

    • Probing the Atomic Arrangement of Subsurface Dopants in a Silicon Quantum Device Platform 

      Røst, Håkon; Tosi, Ezequiel; Strand, Frode Sneve; Åsland, Anna Cecilie; Lacovig, Paolo; Lizzit, Silvano; Wells, Justin William (Journal article; Peer reviewed, 2023)
      High-density structures of subsurface phosphorus dopants in silicon continue to garner interest as a silicon-based quantum computer platform; however, a much-needed confirmation of their dopant arrangement has been lacking. ...

    • Do the Throat Auroras Create Polar Cap Patches? 

      Zhang, Duan; Zhang, Qing-He; Oksavik, Kjellmar; Xu, Tong; Xing, Zan-Yang; Lyons, L.R.; Han, De-Sheng; Zhang, Hong-Bo; Ma, Yu-Zhang; Hu, Ze-Jun; Liu, Jian-Jun; Wang, Yong; Wang, Xiang-Yu (Journal article; Peer reviewed, 2023)
      Throat auroras and polar cap patches are common phenomena in the polar ionosphere resulting from magnetosphere-ionosphere coupling. A campaign was organized, with all-sky imagers at Yellow River Station, the European ...